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Abstract
AbstractThe dimensionless equations describing the cooling with solidification of polymer melts under pressure are solved numerically for partially crystalline and glassy polymers. The proposed finite‐difference solution assumes constant, but different, average properties for each of the amorphous and crystalline phases. Natural convection is ignored (Grashof Number <10−8), and internal flow as a result of pressure gradients and the effect of pressure anisotropy on temperature profiles have been neglected. Numerical predictions of temperature profiles, pressure, and the position of the freezing front in a long, cylindrical mold are in good agreement with experimental data.
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